| 2101 | ALT BSC POST failed. |
| 2110 | ALT BSC 8255 port A failure. |
| 2111 | ALT BSC 8255 port B failure. |
| 2112 | ALT BSC 8255 port C failure. |
| 2113 | ALT BSC 8253 timer 1 did not reach terminal count. |
| 2114 | ALT BSC 8253 timer 1 stuck on. |
| 2116 | ALT BSC 8253 timer 2 did not reach terminal count or timer 2 stuck on. |
| 2117 | ALT BSC 8251 Data set ready failed to come on. |
| 2118 | ALT BSC 8251 Clear to send not sensed. |
| 2119 | ALT BSC 8251 Data set ready stuck on. |
| 2120 | ALT BSC 8251 error |
| 2121 | ALT BSC 8251 hardware reset failed. |
| 2122 | ALT BSC 8251 software reset failed. |
| 2123 | ALT BSC 8251 software "error reset" failed. |
| 2124 | ALT BSC 8251 transmit ready did not come on. |
| 2125 | ALT BSC 8251 receive ready did not come on. |
| 2126 | ALT BSC 8251 could not force "overrun" error status. |
| 2127 | ALT BSC Interrupt failure - no timer interrupt. |
| 2128 | ALT BSC Interrupt failur....transmit, replace card or planar. |
| 2129 | ALT BSC Interrupt failure....transmit, replace card. |
| 2130 | ALT BSC Interrupt failure....receive, replace card or planar. |
| 2131 | ALT BSC Interrupt failure....receive, replace card. |
| 2133 | ALT BSC Ring indicate stuck on. |
| 2134 | ALT BSC Receive clock stuck on. |
| 2135 | ALT BSC Transmit clock stuck on. |
| 2136 | ALT BSC Test indicate stuck on. |
| 2137 | ALT BSC Ring indicate stuck on. |
| 2138 | ALT BSC Receive clock not on. |
| 2139 | ALT BSC Transmit clock not on. |
| 2140 | ALT BSC Test indicate not on. |
| 2141 | ALT BSC Data set ready not on. |
| 2142 | ALT BSC Carrier detect not on. |
| 2143 | ALT BSC Clear to send not on. |
| 2144 | ALT BSC Data set ready stuck on. |
| 2145 | ALT BSC Carrier detect stuck on. |
| 2146 | ALT BSC Clear to send stuck on. |
| 2147 | ALT BSC Unexpected transmit interrupt. |
| 2148 | ALT BSC Unexpected receive interrupt. |
| 2149 | ALT BSC Transmit data did not equal receive data. |
| 2150 | ALT BSC 8251 detected overrun error. |
| 2151 | ALT BSC Lost data set ready during data wrap. |
| 2152 | ALT BSC Receive timeout during data wrap. |